Vaporizing-burner.



O. WIEDERHOLD.

VAPORIZING BURNER.

APPLlcAnoN FILED xuNE 23.1916.

Patented Apr.

Vmay become heated and vaporized.

finden strains oscan wiEnEnnfoLn, on JEnsEY orrsr9 NEW JERSEY.

vaPoErzrne-EUENEE.

VApplication filed June 2B,

To all Lo/tom t may concern:

Be it known that l, @SCAR WIEDERHOLD, a citizen of the United States, and a resident of Jersey City, in the county of Hudson and State of New Jersey, have invented certain new and useful improvements in Vaporizing-Burners, of which the following is a specification. v l My present invention relates to burners in which liquid fuel, say kerosene, is vaporized andthe vapor, mixed with air, burned to produce heat, say for bringing a so-called incandescent mantle to luminosity. In devices of this class, means are generally provided for conducting `a portion of the heat developed by combustion, to the fuel which is on its way to the burner, so that suci fue] primary object of my present invention is to provide a very efficient and simple device for thus conveying the heat of the flame to the supply of fuelflowing to the burner. Another feature of my invention relates to means for the thorough and energetic mixing and preheating of the air and vaporized fuel. Still another feature of my invention has for its object to facilitate the cleaning of the fuel-outlet, so as to readily keep the burner in properly voperative condition. Other features of the invention will appear from the description following hereinafter,

land particularly from the appended claims,

which define the scope of my invention. I Reference is to be had `to the accompanying drawings, which illustrate, as an yeX- ample, a kerosene-vapor burner in Connection with an incandescent mantle of wellknown character, said burner embodying the features of my present invention. In these drawings Figure l is a central sectional elevation of the appliance, taken on line 1-1 of Fig. 2; Fig. 2 is a horizontal section on line 2--2 of F ig. l; Fig. 3 is aV vertical section on line 3-3 of Fig. 2; and Fig. 4 is a vertical section on line ii of Fig. l.

liuel is supplied in any well-known or approved manner to the lower end of the supply-tube A; if this fuel is kerosene, it would be supplied from 'a reservoir in which'it is kept under pressure; such reservoir and the means for producing pressure therein, being well-known inthe art, I have notldeemed it necessary t0 show them in the drawing. A is a nipple for connecting the tube* A with thepipe leading from the reservoir. rli`he upper end of the supply-tube Ai is shown Specification of Letters Patent.

Patented Apr, 23, fait,

191e. serial no. 105,394.

`screwed into a short vertical tube B extending downwardly from the central portion of a horizontal fuel-heating or vaporlzing tube C. A plece of wire-gauze or the like is rolled into cylindrical tubular shape, as shown at Y other, and the upper end of the tube A serving to press the coil D into contact withthe coil D, or at least to hold the vertical coil stationary. The horizontal coil D abuts at the vright-hand end against therwall of the Vtube C, while the other end of saidl coil is i engaged by a `screw-plug E, screwed into said tube C so tightly as to prevent leakage and also to prevent loosening of the lug. 'At the right-hand end of the horizontal fuel-heating tube C, I have shown an upright tube F, which may be integralwith the tubes B and C, and thel lower hend of the tube F communicates with the tube C. At the upper end of the tube F l provide a laterally-arranged nozzle H having arhorizontal outlet H. Opposite this outlet, but spaced therefrom, is arranged a horizontal mixing tubeJ.. open at both ends, and suit- Vably supported, as by passing through the intermediate member K of a shell or body, which as shown comprises cylindrical members K', K, K of different diameters, an annular horizontal member K* connecting the lower, widest member K withthe intermediate member K, and anV annular horizontal member K at the junction of the said intermediate member K with the upper, narrowest member K. The heating tube C eX- 'tends through or against the lowermost cylindrical member K and is secured thereto, as by a nut G screwing on the plug E. This member is openat the bottom, as shown, so that the flame of alcohol or other suitable fuel burning in the cup L (carried by the tube A) may pass into the shell or body and strike the tube C, to preheat it in the wellknown way when Istarting the burner or lamp. The `upper end of the shell or body is also open and receives the sleeve M of the burner having a perforated arched plate M', an annular portionli and anouter cylindrical flange Mii The lower edge of the incandescent mantle N 1s receivedbetween the mantle is supported in anyl suitable manner,

forinstance by means of a vertical rod O (of refractory material) carried by the center yof* the burner plate M and engaging the upper end of the mantle N at its center.

Within the intermediate member K of the shell or body, and below the mixing tube J, is secured al horizontal disk ork plate P,

i which closes theY lower end of said intermediate member, except that a central strip f or bandof perforations P is provided in said plate. rlhe horizontal annular member l* is provided with a segmental opening le immediately below theV mixing tube'J and symmetrically with reference thereto (see Fig. 2), and above the said annular member, adjacent to said opening, extends vertical-ly( av wall Q, Q, vthe outer portion of which, Q, is curved concentrically with the shell or body,-while they end portions, Q', ex tend radially to the intermediate member VKat their lower ends, and to the cylindrical flange Mii at theinupper ends. From the lower end of thewall Q, Q] extends out- Y l, tween thewall Q, Q and the adjacent por- Y tionofthe shell or'body, and preferably termina-ting at about the vlevel of the upper edgeof the flange *M the latterlis preferably aper-tured where `it forms part of the chimney wall, as indicated atm, for a puri pose 4stated, hereinafter. The lowermost body'member K is provided with a lateral openingfc which serves to facilitate the assembling ofthe device and also allows some of the hot gases to pass out, ander the wall or shield R, R to heat'theright hand' end of the tube C, andthe upright tube F, as will be Vexplained below. The mixing `tube J'alsoextends .through lthe wall Q, andl is preferably secured thereto, so that the mixingtube is supported by the member K and by the wall Q. .The plate R is shown as extending into aslotof the vertical tube F, vso 4that said plate, in conjunction with the materialor lugF above said slot, serves as` an additional. support for the connected i tubesB, C, F.

I lInV operation, Vthe* lamp is started by pouring fuel, ,say alcohol, into the cup L,.and

lighting such fuel. Y Theliame will strike and heat the tubes B. C, together with the lower portion ofthe tube F, theopening 7c allowing the flame to spread laterally for this purpose, 'while the shield RWE prevents such flame vfrom reaching the fuel nozzle H.

. The Afuel in the tubes B', C, F will be vaporized or preheated, `this a-ction being .intensid bythestateet fine Subdivision Obtained yby the use ofthe wire-gauze coils D, D.

The vaporized fuel will pass out through the ynozzle H, become mixed with air (streaming chiefly from above and from the sides), and flow through the mixing tube J, in which the vaporized or heated fuel will become thoroughly mixed with the air. Issuing from the delivery end of the mixing tube, the air-and-fuel mixture will impinge against the wall K, which will deflect it laterally to both sides, and the whirling action thus obtained will contribute to still further Vinsure the homogenecusness of the mixture.

The chamber located between the burner plate M and the perforated plate P, and

surrounded by the members K', K, K and and M, forms a mixing chamber communieating with the mixing tube J, which latter lmay therefore be considered as forming part of the mixing chamber. The mixture of gas or vapor and air passes out of said chamber, partly through the perforated burner plate M, and partly through the perforations P in the plate or disk P at the bottom ofthe mixing chamber. These perforations P are preferably located exactly above the fuel-heating or vaporizing tube C, so that the `gas or vapor issuing from the perforations P will strike said tube C, which is located a slight distance below the perforations, and moreover, the gas or vapors will ystream around the sides of said tube C. The flame from the cup L will come in contact with the mixture issuing from said perforations P', and will ignite such mixture. rlhe plate P therefore forms an inverted burner the fiame of which will heat the tube C. As soon as this llame is lighted (which will take place automatically) there is no further need of heating by the flame from ,the starting cup L, and the latter flame can be extinguished, or allowed to go out. The combustion products from the inverted flame. at the perforations P will escape partly through the lateral opening 7c kand under the shield R, R', but chiefly through the chimney connected with the opening 7u. It will be understood that only a small portion of the mixture contained in the mixing chamber will pass downwardly through the perforations P, the larger part passing up through the burner plate M to the mantle, where it is'ignited in the usual way. The shield R, R not only concentrates the heat of the starting llame and of the inverted burner llame upon the lower portion of the upright tubeB and the adjacent end of the horizontal tube C, but likewise keeps the saidliames from reaching the nozzle H and from contaminating the fuel issuing therefrom, or even causing a premature ignition of such fuel. r[he inverted burner flame will, under normal conditions, continue to burn as long as the lamp is in operation, and willYY til-,11S constantly heat orY vaporize the fuel flowing through the tube C on the way to the mixing chamber. However, should the inverted flame go out accidentally, an unconsumed portion of the fuel-and-air mixture will pass through the perforations IJ around the tube C, and upthe chimney coinmunicatin with the opening 7c, said chimney terminating adjacent to the mantle. Since the latter will remain incandescent for a while even in .the event of the fuel-heating flame at P going out, the unconsumed mixture issuing end of said chimney will become ignited by contact with the incandescent mantle, and the flame will jump back downwardly in the chimney and right to the perforations l?, so that the inverted burner will be relighted automatically. This re-lighting may be facilitated by providing apertures in the inner wall of the chimney, as at m, so that the` unconsumed mixture may reach the incandescent mantle N without requin ing to travel to the top ofthe chimney.

It will be observed that there is a space between the outletof the nozzle H and the inlet of the mixing tube J. This is also of advantage as it affords facility for introducing a tool, such as a bar with a needle at the end, for cleaning the outlet I'I of the nozzle H. y A

'lhe flange forms a protector surrounding the edge of the mantle N and preserving it against injury by knocking against it.

It will' be seen that the edge of the mantle is received in an annular trough formed by the parts M, M, Mk.

It will be obvious that my invention may be used not only for vaporizable (liquid) fuel, but for gaseous fuel as well, and likewise, that itis not limited in its applica tion, to incandescent fuel lamps, although I prefer to use my present improvements in connection with incandescent fuel lamps burning kerosene.

Various modifications may be made without departing from the nature of my invention as defined in the appended claims.

I claim as my invention:

l. In conjunction with a mixing chamber having burner-forming top and bottom walls and a vertical wall between the levels of said burners, a. mixing tube extending into said chamber horizontally and having its outlet adjacent to said vertical wall, the other end of said tube being open to the outside air, a vaporizer exposed to the heat of the lower from the upper` bottom lengthwise,

burner, and a nozzle connected with said vapor into air, avaporizer exposed to the heat of theV lower burner, and a nozzle connected with said vaporizer and adapted to inject vapor into said mixing tube.

3. In conjunction with a mixing chamber having anv upper burner and a perforated bottom forming a lower burner, a mixing tube extending longitudinally above the perforated bottom of said chamber and having its discharge end within said chamber, and means for supplying yfuel to said mixing tu e.

fl. In conjunction with a mixing chamber having burners at the top and bottom respectively and a curved vertical deilecting wall between the levels of said burners, a mixing tube extending into said chamber and having its outlet adjacent to, and direct* ed horizontally against, said curved deflect ing wall, the other end of said tube being open to the outside air, a vaporizer exposed to the heat of the lower burner, and a nozzle connected with said vaporizer and located to inject vapor into said mixing tube.

5. In conjunction with a mixing chamber Vhaving an upper burner and a Aperforated bottom forming a lowerl burner, a mixing tube extending within said chamber between the said burners and over said perforated connected with said vaporizer and located to inject vapor into said mixing tube.

a vaporizer exposed to the heat of said lower burner, and a nozzle 6. In conjunction with a mixing chamber having a mantleheating burner at its upper portion and a fuel-heating burner at its lower portion, an annular trough` arranged to receive the edge of the mantle, the outer wall of said trough being perforated, and a chimneyleading from a point adjacent to' said fuel heating burner upwardly and along the perforated portion of said trough.

In testimony whereof, I have signed this specication.

OSCAR WIEDERHOLD.

Copies of this patent may be obtained for vc cents each, by addressing the Commissioner of Patente.

Washington, D. C. Y 

